ARXP1124 Equivalent & Substitute Parts Reference

Part Overview

The ARXP1124 is a latching single-coil RF relay manufactured by Panasonic Electric Works, designed for 24VDC applications with SPDT contact configuration and 500mA switching capacity. This component is classified as obsolete, making substitute part identification essential for ongoing system support and new design implementations. The ARXP1124 operates across industrial temperature ranges (-40°C to 70°C) with gold-plated contacts and through-hole PC pin termination suitable for PCB integration.

Substiute Parts

ARXP1124

Panasonic Electric WorksIn Stock: 843ARXP1124 Datasheet

Current PartRFQ

ARN12A24

Panasonic Electric WorksIn Stock: 766ARN12A24 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ARXP1124 is determined by the following critical parameters:

Primary Compatibility Criteria:

• Coil voltage: 24VDC (mandatory match)
• Contact form: SPDT (1 Form C) configuration (mandatory match)
• Contact material: Gold plating (mandatory match)
• Manufacturer: Panasonic Electric Works (preferred for consistency)

Secondary Compatibility Criteria:

• Contact rating current: 500mA minimum required
• Must operate voltage: 18VDC or lower
• Operating temperature range: Must encompass or exceed -40°C to 70°C
• Switching voltage: 30VDC or higher

The ARN12A24 qualifies as a substitute based on matching coil voltage (24VDC), contact form (SPDT), contact material (gold plating), and manufacturer. Functional differences exist in coil architecture (dual-coil latching versus single-coil latching) and mounting methodology (surface mount versus through-hole), which require circuit-level evaluation for compatibility.

Parameter Comparison

Engineering Selection Recommendations

ARN12A24 Substitution Feasibility:

The ARN12A24 is an active-production substitute for the obsolete ARXP1124 from the same manufacturer. Both components share identical coil voltage (24VDC), contact form (SPDT), contact material (gold plating), and minimum operating voltage (18VDC) specifications.

Critical Design Considerations:

1. Coil Architecture Difference: The ARXP1124 uses single-coil latching architecture, while the ARN12A24 employs dual-coil latching. This requires verification that the application's control circuitry can accommodate dual-coil drive requirements (16.7mA versus 8.3mA coil current; 400mW versus 200mW coil power).

2. Mounting and Termination: The ARXP1124 is through-hole mounted with PC pin termination, while the ARN12A24 is surface-mount with gull-wing termination. PCB redesign is necessary for mechanical integration.

3. Switching Performance: The ARN12A24 provides faster switching characteristics (5ms operate/release time versus 10ms), which may require circuit timing validation in applications with critical timing dependencies.

4. Compliance Status: The ARN12A24 is RoHS compliant and currently manufactured, providing supply chain continuity and regulatory alignment for new designs.

5. Temperature Range: The ARN12A24 extends the upper operating temperature limit to 85°C, providing enhanced thermal margin compared to the ARXP1124's 70°C maximum.

Frequently Asked Questions (FAQ)

Q: Can the ARN12A24 directly replace the ARXP1124 without circuit modification?

A: No. While both components share identical coil voltage and contact form, the ARN12A24's dual-coil latching architecture requires different drive circuitry than the ARXP1124's single-coil design. Additionally, the surface-mount gull-wing termination requires PCB layout changes from the through-hole PC pin configuration.

Q: What is the primary reason for substitution?

A: The ARXP1124 is classified as obsolete. The ARN12A24 is an active-production equivalent from the same manufacturer that maintains functional compatibility for the core relay function (24VDC SPDT switching with gold-plated contacts).

Q: Are there electrical parameter differences that affect circuit design?

A: Yes. The ARN12A24 requires double the coil current (16.7mA versus 8.3mA) and coil power (400mW versus 200mW) due to its dual-coil architecture. Control circuitry must be designed to accommodate these higher drive requirements. The ARN12A24 also provides faster switching times (5ms versus 10ms).

Q: Does the ARN12A24 meet modern compliance standards?

A: Yes. The ARN12A24 is RoHS compliant, whereas RoHS status for the ARXP1124 is not specified. Both components carry identical ECCN (EAR99) and HTSUS (8536.41.0020) classifications.

Q: What mounting considerations apply to the ARN12A24?

A: The ARN12A24 is surface-mount technology (SMT) with gull-wing leads, requiring PCB design changes from the ARXP1124's through-hole PC pin configuration. SMT assembly processes and placement equipment differ from through-hole methods.

Q: Is the contact current rating compatible?

A: The ARXP1124 specifies 500mA contact rating. The ARN12A24 contact rating is not provided in available data. Contact rating verification with the manufacturer is required before final design approval.